Restructure: Move 52 files into 7 domain packages

korrektur/ zeugnis/ admin/ compliance/ worksheet/ training/ metrics/
52 shims, relative imports, RAG untouched.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

klausur-service/backend/worksheet/nru_pdf.py

@@ -0,0 +1,31 @@
+"""
+NRU Worksheet PDF — PDF generation using weasyprint.
+
+Extracted from nru_worksheet_generator.py for modularity.
+"""
+
+from typing import List, Dict, Tuple
+
+from .nru_html import generate_nru_worksheet_html
+
+
+async def generate_nru_pdf(entries: List[Dict], title: str = "Vokabeltest", include_solutions: bool = True) -> Tuple[bytes, bytes]:
+    """
+    Generate NRU worksheet PDFs.
+
+    Returns:
+        Tuple of (worksheet_pdf_bytes, solution_pdf_bytes)
+    """
+    from weasyprint import HTML
+
+    # Generate worksheet HTML
+    worksheet_html = generate_nru_worksheet_html(entries, title, show_solutions=False)
+    worksheet_pdf = HTML(string=worksheet_html).write_pdf()
+
+    # Generate solution HTML
+    solution_pdf = None
+    if include_solutions:
+        solution_html = generate_nru_worksheet_html(entries, title, show_solutions=True)
+        solution_pdf = HTML(string=solution_html).write_pdf()
+
+    return worksheet_pdf, solution_pdf